US1699237A - Liquid-dispensing valve - Google Patents

Description

Jan. 15, 1929.

A. R. GOLDRICK LIQUID -DIsPENsING VALVE Filed May 29, 1922 2 Sheets-Sheet 1 INVENTOR. M 66, cf'nk/g A TTORNEYS,

Jan. l5, 1929, 1,699,237

A. R. GoLDRlcK LIQUID DISPENSING VALVE Filed May 29, 1922 2 Sheets-'Shen 2 39 27e, j@ 2y@ 20 (6k f2 -5 3f' INVENTOR ,f1 TTORNEYJ.

Patented Jan. 1li, 19229.

UNITED STATES ALBERT R. GOLDRICK, OF CLEVELAND, OHIO,

CORPORATION, COMPANY, OF CLEVELAND,

ASSIGNOR TO THE GERSON STEWART OHIO, A CORPORATION OF OHIO.

LIQUID-DISPENSING- VALVE.

Application led May 29,

This invention is directed to improvements in apparatus ter dispensing liquid soap und is more particularly concerned with improvements oit' that type/of dispenser which is used in combination with n distributing system wherein a` supply reservoir is remotely positioned trom the place in which the sc ap is dispensed or used.

The general object et the present invention is the provision of e soap dispensing valve which .may be connected to u supply line or pipe wherein there is considerzble pressure or head; the movable elements of the valve being such that when the valve is normally inoperative, the dispensing outlet opt the valve is effectively sealed and when in use, cemmunicution between the supply line and the valve is closed or shut oit' by means actuated by a valve stem but movable relative thereto; the closing action being precedent to the opening et the dispensing port et' the valve.

A further object et the present invention is a novel arrangement oi' the various elements ot the valve to effectively tuliill the foregoing objects but which are so arranged aste result in the use of u combination of elements which may be durable but ot' such a simple character' as te permit of a very economical production et the dispensing valve.

Other objects will be hereinafter set forth in the it'ollowing description, which refers to the accompanying drawings, and the essen tial characteristics will be sununarized in the claims.

In the dra-wings, Fig, 1 is un enlarged side elevation of a preferred term et valve; Fig. 2 is a cross sectidnul view taken centrally of the vulve and showing the normal relation et the elements et the valve when the valve is closed; Fie'. 5l. is a similar view illustrating the relation et the various parts when the valve is in an open or discharging condition; Fig. 4 is a er, sectional view taken substantially along the line lf-4f., Fig. 2 Fig'. 5 is a cross sectional view taken along the line 5--5, Fig. 2; Fig. (i is a view siifnilar to Fig. 2, showing however, a modified form oit plunger construc tion; Fig. 7 is a similar view illustrating the relationlot the various part-s of the valve when the valve is in `an open or dispensing conditionrF 8 is a cross sectional view taken substantially along the line 8--8 of Fig. 7.

Referringto the various parts ofthe de- 1922. Serial N0. 564,369.

vice by the use of reference characters, in` Fig. 1, I have shown a body member 10 connected to a source of supply 11, the body member being provided with a downwardly projecting portion 12 having a suitable dispensing opening or port `formed therein, communicating with the interior of the valve, as will be hereinafter described.

A piston or stem member 13 is provided with a thumb portion or push but-ton 14 and is slidably mounted in a packing nut l5, the` latter .member being in threaded engagement with the outer end of the body member 10, as illustrated in Figs. 2 and 3.

The body member has a valve seat 164 termed interiorly thereotI and a passageway 17 termed through the rear wall`18 et the valve body which communicates with the supply line.

A suitable mechanism for closing the opening comprises a plunger carried by the stem 13, and relatively movable thereto, and which is arranged to close communica-tion betweenl the supply line and the discharge chamber 20 of the valve body when the Vdischarge bore 12a is opened upon the inward movement et the stem member 13. The plunger member 19 may have a coniferm head 19a, the conic surface or which is arranged to cont-act with the vulve seat 16 having a complementary surface to the come surface of the plunger.

To support the plunger in alignment with. the inlet opening, the stem 13 is suitably bored to receive the other end of the plunger member and is maintained in operative relation therewith by a pin member 22 which passes through the inner end of the stem 13, the pin member beingarranged to engage the plunger member 19 in e suitable slot 8 formed therein, whereby further inward `movement y of the stein 13 is permitted after the stem hns carried the plunger into contact` with the valve seat 16. A spring member 24 is mounted on the plunger member 19 and is arranged to abut the end ot the valve stem and the head of the plungernlember, whence the plunger member is retained in a normally extended position relative to the stem. i

Opposing the inward movement of the stem is a second spring member 25, positioned within the discharge chamber et' the valve body with one end thereof abutting the end wall 18 of the body member, and the other end abutting a shoulder 26 formed adjacent the inner end of the valve Stem 13. This spring member maintains the valve stein in a normal outward position with the shoulder 2G thereot in Contact with an annular paching ring 27.

rlhe means tor preventing leakage along the stem may comprise the packing ring 27, which abuts a shoulder termed by ay ditiference in the bore ot' the valve body comprising the discharge chaniber and the outer portion thereoi comprising the packing chamber. A metallic ring 28 is maintained in pressed relation on the tace ot' the paci-:ing ring 2l' by a spacing sleeve 29, while a flanged packing ring $30 is compressed against the end ot the sleeve by the packing nut l5 which is recessed to receive the cyl indrical portion ot the pa cl;- ing ring BO. lt will be noted that the tightening ol the packing mit l5 will compress the packing ring 3G and the packing ring ill' will also be compressed thereby through the sleeve 29 and metallic ring 52% The arrange ment oil' the packing members, sleeve and nut, as weil as the relation ot the stem i3 thereto is described in my toi-nier application, Serial No. Llfl9,0tiril,'tiled March 2, 'll-)21.

it is to he seen in Fig. 2, that lhA spring member maintains the valve stem in the position shown with the .shoulder compressed against the inner tace ot the packing ring 2'?. Since the liquid passes through this member when being dispensed, this arrangement oliectively prevents any leakage ot the liquid trom the discharge chamber 20 to the discharge port l2 when liquid is not being dispensed. rhe packing ring 2T will likewise serve to prevent this leakage as the plunger is moved inwardly, until a groove 9 formed in the stem, approaches the position illustrated in Fig. 3, whence connnunication is established between the discharge chamber and the eject ing port by passage through the o iening in the packing ring and through the metallic ring 28, thence through the passagewavs 29 Vtermed iu the sleeve 2S). The distance trom the :"slioulder 2li to the inner edge ot the groove l) is such. that as the stem lil is forced inwardly, the plunger head will be etlectively seated and close the passageway i7 iromthe supply line., before the groove 9 is moved to the position illustrated in Fig, l, the pressure ot the plunger ll) upon 'the seat beingl equal to the pressure o." the spring member 2l mounted thereon.

The diameter ot the plunger nulnber may be considerably less than the diameter olf the bore termed in the stem in which it mov-es, to alloriT a wobbling orshitting movement ot the conitorni end ot the plunger when being seated on the valve seat; thus insuring` a proper closing of thevpassageway 1T betere the discharge port 12a is in communication with the discharge chamber Qt) ot .the valve.

When manual pressure is: relieved on the outer portion lll of the stem, the stem and plunger will be moved outwardly under the influence ci the spring 25 and a small quantity ot liquid Soap will be dispensed through the discharge port 12a, The proportioning of the length ot the stem travel to the normal distance which the plunger head 19 is trom the valve seat, is such that at no time will connnunication be established between the discharge chamber Q() and the dispeilsiug port l2 betere the passageway i7 is closed upon the manual operation ot' the valve.

From the foregoing description, it is to be seen that l have provided a valve having packing means which will be ellect-ivc at all times in preventing leakage through the valve or along the valve stem. `l?ilarthermore, in the double valve construction illustrated, the inner valve is comprised of metal parts with no resilient members involved in the construction thereoil ln Figs. ti, 'i' and tl, l have illustrated a inodilied torni ot' construction wherein the soap being dispensed trom the discharge chamber, passes through the bore ot the stein in which the plunger member is slidably mounted. its shown in Figi 6, the stem member i3 carries a plunger member lll in the manner described. The lit between the plunger member and the bore ot the stem however, such that suliicient space is provided tovpermit the liquid to traverse the bore ot the stem trom the discharge chamber 2Oa ot the body member l0 to a radial passageway formed in the stem. This passageway communicates with the bore et the spacing sleeve 29a, which is greater than the diameter ot the stern.

The spacing sleeve, in this case, has au annular groove `formed therein, which, when the sleeve is inv position, spans the discharge port l2. il radial iassageway 3l termed in the sleeve, atlords cominunication between the bore of the sleeve and the grof'ive ot the sleeve.

To interrupt communication between the discharge chamber and these passageways, the end of the plunger 19h which is in sliding engagement with the stem, is arranged in the form ot a piston, with a pliable gasket 3l closely fitting the end thereoil and also a reducedportion ot' the plunger termed adjacent this end. rlhe pliable member 3st may be secured to a reinforcing metallic disc by any suitable means, such as rivet 3G. il spring member 3T is positioned within the stem bore and acts upon the disc member to maintain the pliable member Bl in comd pressed relation with the wall of the stem, as well as in engagement with the end ot' the plunger. The pin member 22 is carried on the innerend et the stem and passes through a slot 38 formed in the plunger; the pin serving to prevent the spring member 37 from completely ejecting the plunger trom the stem bore. The spring member 25, in this construction, functions in the manner hereto- Y 19, to the normal outward fore described, in reference to the construction shown in Figs. l to 5.

It will be noted in this case, that the liquid does not pass through the packing ring 27@ which is similar' to the ring 27 in the former construction, the ring 27a serving merely to prevent leakage of the liquid from the discharge chamber 2OL1 to the passageway 38. The relation of the length of the plunger to the length of the discharge chamber remains the same in this instance; there being a suilicient distance between the valve seat 16 formed about the inlet port 17 to permit the ingress of the liquid to the discharge chamber when the spring member 25 has forced the stem 139L and consequently, the plunger position, illustrated in Fig. (i.

lVhen the stem has been forced inwardly, a distance corresponding to the space between the seat 1G and the valve end of the plunger member, the springl 37 will then be conipressed as the stem is further advanced, into the discharge chamber and the packing member Se, thus being stationary, will be advanced into the bore of the stem, thereby establishing communication between the passageway 32 and the fore of thek stem, whence liquid may pass from the discharge chamber along the stem bore through the passageways 32, 38, 3l and 38, and through the dispensing opening l2.

It will be noted that in either of the valve constructions herein set forth, the supply line is first sluit off from the dispensing valve by valve mechanism which does not operate to dispense the soap from the discharge chamber of the valve but is operated by the discharging means. Likewise, at no time will a clear path from the supply line to the discharge orifice of the valve be open, for the supply line to the valve is necessarily first closed before the discharge port is opened. Likewise, upon an outward movement of the stem, the discharge port is closed before communication is rie-established between the supply line and the valve. y

Having thus described my invention, I claim l. In a dispensing valve,` the combination of a valve body with a discharge chamber having an inlet and an outlet, a valve stem having-an annular shoulder formed thereon, a packing ring comprising an end wall of the discharge chamber, means for maintaining the packing ring in Contact with the cylindrical portion of the piston during a predetermined movement thereof, a spring member normally maintaining the stem with the chamber inlet, whereby the stem and plunger move as a unit upon a predetermined inward movement of the stem, said plunger memberk closing said inlet before said packing ring loses contact with the cylindrical portion of the piston.

2. In a dispensing valve of the character described, the combination of a body member having an inlet and an outlet, a valve stem arranged to advance into the discharge chamber, a packing ring comprising an end wall of the discharge chamber, means for maintaining said packing ring in contact with the cylindrical portion of the stem, said stern having a shoulder formed thereon and normally contacting with the face of the packing ring and sealing communication between the discharge chamber and the outlet ofthe body member, a plunger member arranged to close the inlet to the discharge chamber upon a predetermined movement of the stem, said plunger member being carried by the stem, a spring' member acting upon the `plunger member and the stem, whereby relative movement between the plunger member and the stem may be permitted, and means for maintaining the plunger member in slidableengagement with the stem.

3. In a dispensing valve, the combination of a valve body provided with a discharge chamber having an inlet and an outlet, a valve stem arranged toadvance into the discharge chamber, a packing ring in contact with the cylindrical portion ofthe stem, said stem having a portion of less diameter than the diameter of the portion contacting with the ring and having a shoulder formed` thereon normally contacting with the faceof the packing ring, resilient means for maintaining the stem in a normally outward position, a plunger member slidably mounted on the piston and arranged to close said discharge `chamber inlet upon an inward movement of the stem, said closing act-ion of the plunger member preceding the loss of contact between the packing ring and the stem, whereby the inlet to the discharge chamber is sealed precedent to the opening of the outlet thereof by the stem.

In testimony whereof, I hereunto aliix my signature.

` ALBERT R. GOLDRICK.

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